Today, US Weekly reported on its Web site that Cynthia Rodriguez has strong suspicions about Alex’s friendship with Madonna.

“She doesn’t believe they are just friends,” an insider told the magazine.

“Something deeply suspicious is happening,” the source added. “Cynthia did leave because she is sure this is all true.”

The game of musical celebrity beds has effectively ended the randy Rodriguez’s already-shaky marriage, even though divorce papers have not been filed, sources said.

Cynthia Rodriguez, 34, has been in Paris for at least the past four days visiting Grammy-winner Kravitz.

C-Rod was seen outside the 44-year-old Kravitz’s pad in the romantic City of Light as recently as Tuesday night.

Kravitz today denied the affair, telling US Weekly, “There is absolutely no affair between Cynthia Rodriguez and myself. This is unequivocally 100% not true.

“Cynthia is a friend and is here with the godfather of her baby, who is also Alex’s trainer, his wife and their baby girl,” he adds.

“She came here to escape from everything happening in New York City. I opened my home to her as a friend and I find it extremely hurtful that I am now being referred to as an adulterer.”

Meanwhile, A-Rod has been in New York with the Bronx Bombers, reading headlines about his numerous visits to Madonna’s Upper West Side apartment, which were first reported by Us Weekly on Tuesday.

The magazine also reported that A-Rod may have gone to Madonna’s New York pad as early as one night after leaving his wife’s side in Miami following the April 21 birth of their daughter Ella.

Madonna’s publicist, Liz Rosenberg, denied that the nearly-50-year-old singer was having an affair with the much-younger Yankee third baseman.

But sources told The Post the married Material Mom and Rodriguez are likely more than just “friends.”

The sources also said Cynthia Rodriguez has taken “Are You Gonna Go My Way” singer Kravitz as a lover.

Madonna’s marriage to British movie director Guy Ritchie has reportedly been on the rocks for some time. Both of them consulted divorce lawyers recently in Britain.

The couple has two sons, Rocco, 7, and 2-year-old David Banda, a toddler whom they adopted in the African nation of Malawi.

After the Yankees’ 18-7 thrashing of the Texas Rangers last night at the Stadium – in which A-Rod went 2 for 3 with a home run and four runs scored – the 32-year-old slug ger used the same motion umpires use to call base runners safe and zipped his fingers across his lips when asked about his mar riage.

He also kept mum earlier in the day when asked about Madonna.

The Material Girl and her two sons attended a Yankee game two weeks ago, sitting in Rodriguez’s personal seats with their mutual agent, Guy Oseary, who also has worked with Kravitz.

Rodriguez recently has been studying kabbalah, the Jewish mystical practice whose adherents include Madonna and Ritchie, according to sources.

Last year, The Post revealed the future baseball Hall of Famer had been jaunting around the United States and Canada in the company of a busty blond stripper, Joslyn Morse.

Despite those revelations, Cynthia not only didn’t dump A-Rod, she got pregnant.

Morse, who had been an aspiring Playboy model, declined to comment yesterday.

Kravitz co-wrote and produced Madonna’s steamy 1990 hit, “Justify My Love,” whose salacious video raised more than a few eyebrows. Kravitz denied speculation he had an affair with Madonna at that time.

Rodriguez, whose $275 million Yankee contract makes him the highest-paid player in baseball history, has delivered all-star seasons for the Bombers, but has followed those with mediocre postseasons.

Additional reporting by Samuel Goldsmith in New York and Reuven Fenton in Miami